Demountable rim for pneumatic tires



Patented Mar. l2, 1229.

RAYMOND N. noLsEN, or Los ANGELnsgCALIronNIA.

fr y

DEMOUNTABLE nini non :PNEUMATIG TIRES.

Application filed .Tune 1,

This invention relates to automobile accessories, and more particularly to a demount able split rim for straight side or clincher tires, andV it is an object of this invention tol provide a rim which maybe mounted on the felly of a Wheel, and which will permit rapid and easy changing of tires.

Practically. every motorist is familiar with the difiiculties thatare encountered when on the road and it becomes necessary to change tires. The conventional type of rim now on the market necessitates the hammering and prying of the tire to release thesame from the rim. Very often the tire is irreparably daniaged by ysuch handling'7 and Vmy invention is therefore, a remedy for this existing condition. By providing a split rim, it is compara-- tively easy'to separate the sections and remove'the tire from the rim with little or no prying.

, Another object of this invention is to provide a rrim Which Will eliminate wabbly Wheels caused by rims that have become sprung by virtue of the fact` thattires have- -been pried over the same, and' another obj ect of the invention-is to provide a device which eliminates theuse of 4tire irons completely, and Will not endanger the v,hands of an arnateur mechanic attempting to change the tire.

' A still further object of the invention is to provide a device Which may be `marketed for a nominal sum, and Which will be economical by virtue of the `fact that if it is necessary to ever run the machine Without a tire, it will be unnecessary to replacev the entire rim, either piece being replaceable as the case maybe.l f `Y Yet another object of this invention to provide a device which is simple in itsconstruction, efficient in its operation,V is unlikely to get outof order, and is Well adapted to perform the services required of it. Y l/Vith these and many other objects in View which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement `of parts, which Will hereinafter be more fully described, illustrated, and claimed.

The essential features of the invention involved in the carrying outl of the objects indicated are susceptible tov modification; but a preferred Lembodiment of the invention is lshoivn. inV the accompanying drawings, in

which: 7

Figure 1 is a perspective View in section 1927. Serial No.v 195,706.

showing ray-assembled automobile rim in position on the Wheel felly of an automobile. I l

Fig. 2 is a similar sectional lperspective view showing thedevice With certain parts removed to more clearly reveal the nature'of my invention.

Fig. 3 is an inner plan vienT ofra section of `.the device.

Figs. 4 aiidiespectively, are plan and side views of the retaining lug l' employ in connection with `my, invention, andv 'y Fig. 6 is a perspective view vof a section of my rim detached from the Wheel, the portion which is illustrated being-inverted .from itsv normal position. .I p K .A

The device involves in its general' organization a felly designated atlO, a section; of .which is shown in vFigure l.V

, This felly is provided .with a plurality of 'apertures therethrough, .at equal rdistances around the margin thereof for the reception of bolts Al1. An annular retaining lunit l2 is attached to the felly l0 a plurality-of rivets or the like not shown in the drawings;` Thisiretainingunit is `formed of sheet iron and in crosssection has a flat portion -13, an inwardlyextending.

15. The split rim assembly designated in Figure 6 at 17 is received upon this retaining member. This assembly comprisesin comshoulder 14: and a. curved retaining portion bination a rim Which is split annularly as Vat i 18 to 'provide a comparatively Wide section A and a narrow section B. These sections are provided with retaining liangeszl) and 2O respectively.V l.These ilanges Vmay' be con'- structed many suitable manner for use on ysti-aightside or clinclier tires as the casemay 4 A lap Joint 20 reformed where thetwo" be. Y sections engage'each other, and anumber of preferably rectangular cut-out portions 2l are forn'ied-.at suitable points, aroundth'ef,

periphery of the section A. for. a purpose to be described later. I

The section B is provided at'suitable points on the outer retaining flange with a plurality of inwardly extending lugs 22. These lugs have laterally extending These lugs maybe formed integral'with the rim or vattached thereto in any suitable manner as by riveting, Welding or. the like.v

Y portions 23 thereon, and the purpose thereof Will appear later.k y

Inlligures land 5 are illustratedthe retaining lugs employed in connection with this invention. rllhese lugs may bet formed of i small castings and have fiat portions 24 which are Aadapted to lit tightly against one yface of n from thewheel, the bolts thefelly as yshown iniligur'e l. An aperture v25 extends through this iiat portion 'and is adapted to receive the shank of one Aof the bolt-s 1l. A lateral portion is shown. fat 26, vwhich portion provides a iilletlike portion 2f? receivable in the curved-portion 23. A reducer portion is shown at 28 and onl the outervend of the reduced portion there 'is provided offH set flat portion 29 lwhich is `complementary in shape to and is adapted to be seated within,

one of the cutfou't portions 2 1 before referred to.v A Wing BO extends oiitwardly on each Vside of the Ifiatportion 29 atan offset, and rests on the inner surface 3l of the sect-ion A retaining lug 85 is pivoted 'as at 36 to the inner-'face of the piece A, and this retaining lug may be swung against vthe shoulder 32 between the flat portion 29 and the wings 30 of the retaining lugs, thus locking the lugs against `displac'e'nrient to securely holduthe piece A inposition. The reduced portion 28 receives the offset ofthe piece, B yas clearly shown in Figure l, and cut-out portions Ll() in theflat portion 13 ofthe retaining unit 12 are, provided-` to accomodate the cperative i parts of thevarious retaining elements. A

cut-away portion ,4l is provided to receive the reduced portion 28.

In actual operationthedevice is assembled on the felly shownclearly lFigure- 1, the fillet portion 27 engaging the curvedportion 23 yof the lugs 22 to retain the parts inV When desired to remove the ftire position. j Y j 11r are released from tfeir engagement from the p'artsj2vl, and the piece A which is firmly secured `to the piece Bmay be removed f romthe wheel when the tire has an assembled entirety. The pivoted retaining lugs 35 are then swungoutwardly as shown in dotted lines in Figurel to release the part 29, and by pressing'thefsaid part through the cut-out portion 2l, the fillet portion 27 releases its engagement with the curved `part '23, and the pieces A vand B may easily beseparated. vhe pieceB is preferably pulled from beneaththe bead'on the tire, and it is then a comparatively easyvv matter tofpull the tire from "the, piece Tv/Vhen the tire has been repaired or changed, the parts 'mayb be yassembled by. a reversal of this process. l n y do not desire to limit myself to the exact arrangementfalnd constructionof parts shown in the accompanying drawings, for l contemplate. makingY various minor changes in l :the details of construction to conform with thelspirit ofthe invention. i

lt obvious then that I have provided an automobile rim which is in its operation, w`hich maybe manufactured inexpensively, and is well adapted to perform the K services required of it, y What I claim and desire to secure by Let ters Patent, is:

1. A rim for automobile wheels'comprissaidreduced portions.

ing in combination a pair Vof 'rim sections, each rim section having a'n 'annular retaining flange, inwardly extending lugs on one of said retaining iianges, said lugs having laterally extending hook portions, members having fillet portions receivable in said hook portions, and offsetportions, there being apertures i'n said other rim section, said offset portions being receivedin said apertures to hold the rim sections together.

2. A device of the character described comprising a pair 4of sections, each of said sectionsbeing Aannular in formV and having fa yret'aining Aflange thereon, inwardly tending lugs having laterally extending portions thereon, retaining pieces having'fillet portions receivable in said laterally extend- 'ingi portions, reduced portions and, offset portions, there being 'apertures in said other rim section, said offset portions being receivedjin said apertures, said sections presenting a continuous lap joint at their lines or" Contact, said lap joint being receivable in y lA 4demountable rim `comprising 5a pair yof rim sectionswith their adjacent edges disposed-'n a lap joint inwardly extendinglugs on one of said rim sections, having laterally extending portions providing hooks, retain lsaid hookareduced portions on said retaining pieces and offset portions, said lap joint being received in said reduced portions,'there being aperturesin said otherrim section, said offset portions being received in said apertures, and inwardly extending flanges onsaid retaining pieces having apertures therethrough. 4. A device as claimed in claim 3, and in addition, Wings on sai'dpifset portions adapted to bear against said last mentioned rim section.-

5. A demountable rim comprising anpair of rim sections disposed with their adjacent edges in overlapping arrangement, inwardly extending lugs on one of said rim sections, having laterally extending portions provid- -ing hoo-irs, retaining pieces having fillets which are received in 4said hooks, reduced portions on said retaining pieces and offset portions, the lap joint betweenv said rimsections being received in said reduced portions, there being apertures in said other rim" section, said offset portions being received in said apertures, inwardly extending flanges on said retaining pieces having 'apertures therethrough, wings on said osetportions adapted to bear against said last mentioned ,rim section, and lugs pivoted to said lastmen'- tioned section on, the .inner face thereof, adapted to bear against said odset portions Aand hold the same within said apertures.

ln testimonyjwhereof I have signed my name to this specification.

armonia N. pensier. 

